Other Chemistry Answers

Calculate the number of atoms in 6.00 g of calcium.

In an electrolyte cell, solution of CuSO4 and dilute H2SO4 were electrolysed on series. If 1.27g of Cu was deposited, calculate the volume of oxygen liberated at S.T.P. (molar volume of gas at S.T.P.=22400cm³, O=16, Cu=63.5)

0.222g of a divalent metal is deposited when a current of 0.45A is passed through a solution of its salt for 25 minutes using platinum electrodes. Calculate the relative atomic mass of the metal.

Calculate the time it will take to deposit 1 mole of silver if a current of 6A is passed through a solution of silver trioxonitrate (v) (F=96500)

Calculate the normality of oxalic acid solution prepared by dissolving 3.15g of oxalic acid crystals in 250ml of distilled water

50.00 ml of nitric acid (of unknown
concentration) was pipetted into a
150 ml flask and an indicator was
added. 0.1 mol/L NaOH (a strong
base) was added gradually to the
flask from a buret.
a) Write a symbolic equation for
this chemical reaction.
b) Explain at the molecular level
why the pH increases as NaOH is
added to HNO3.
c) What is the volume of NaOH
at the equivalence point?
d) What is the pH at the
equivalence point?
e) Calculate the concentration of
the nitric acid solution.

Calculate the mass of lead in 139g of Pb(NO3)2

The non-volatile, non-electrolyte TNT (trinitrotoluene), C7H5N3O6
(227.10g/mol), is soluble in benzene C6H6. Calculate the osmotic
pressure generated when 14.3g of TNT are dissolved in 242ml of a
benzene solution at 298 K.

What four categories of data do the Argo floats collect?